diff options
Diffstat (limited to 'arch/s390/boot/pgm_check_info.c')
| -rw-r--r-- | arch/s390/boot/pgm_check_info.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/arch/s390/boot/pgm_check_info.c b/arch/s390/boot/pgm_check_info.c deleted file mode 100644 index 97244cd7a206..000000000000 --- a/arch/s390/boot/pgm_check_info.c +++ /dev/null @@ -1,179 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/kernel.h> -#include <linux/stdarg.h> -#include <linux/string.h> -#include <linux/ctype.h> -#include <asm/stacktrace.h> -#include <asm/boot_data.h> -#include <asm/lowcore.h> -#include <asm/setup.h> -#include <asm/sclp.h> -#include <asm/uv.h> -#include "boot.h" - -const char hex_asc[] = "0123456789abcdef"; - -static char *as_hex(char *dst, unsigned long val, int pad) -{ - char *p, *end = p = dst + max(pad, (int)__fls(val | 1) / 4 + 1); - - for (*p-- = 0; p >= dst; val >>= 4) - *p-- = hex_asc[val & 0x0f]; - return end; -} - -static char *symstart(char *p) -{ - while (*p) - p--; - return p + 1; -} - -static noinline char *findsym(unsigned long ip, unsigned short *off, unsigned short *len) -{ - /* symbol entries are in a form "10000 c4 startup\0" */ - char *a = _decompressor_syms_start; - char *b = _decompressor_syms_end; - unsigned long start; - unsigned long size; - char *pivot; - char *endp; - - while (a < b) { - pivot = symstart(a + (b - a) / 2); - start = simple_strtoull(pivot, &endp, 16); - size = simple_strtoull(endp + 1, &endp, 16); - if (ip < start) { - b = pivot; - continue; - } - if (ip > start + size) { - a = pivot + strlen(pivot) + 1; - continue; - } - *off = ip - start; - *len = size; - return endp + 1; - } - return NULL; -} - -static noinline char *strsym(void *ip) -{ - static char buf[64]; - unsigned short off; - unsigned short len; - char *p; - - p = findsym((unsigned long)ip, &off, &len); - if (p) { - strncpy(buf, p, sizeof(buf)); - /* reserve 15 bytes for offset/len in symbol+0x1234/0x1234 */ - p = buf + strnlen(buf, sizeof(buf) - 15); - strcpy(p, "+0x"); - p = as_hex(p + 3, off, 0); - strcpy(p, "/0x"); - as_hex(p + 3, len, 0); - } else { - as_hex(buf, (unsigned long)ip, 16); - } - return buf; -} - -void decompressor_printk(const char *fmt, ...) -{ - char buf[1024] = { 0 }; - char *end = buf + sizeof(buf) - 1; /* make sure buf is 0 terminated */ - unsigned long pad; - char *p = buf; - va_list args; - - va_start(args, fmt); - for (; p < end && *fmt; fmt++) { - if (*fmt != '%') { - *p++ = *fmt; - continue; - } - pad = isdigit(*++fmt) ? simple_strtol(fmt, (char **)&fmt, 10) : 0; - switch (*fmt) { - case 's': - p = buf + strlcat(buf, va_arg(args, char *), sizeof(buf)); - break; - case 'p': - if (*++fmt != 'S') - goto out; - p = buf + strlcat(buf, strsym(va_arg(args, void *)), sizeof(buf)); - break; - case 'l': - if (*++fmt != 'x' || end - p <= max(sizeof(long) * 2, pad)) - goto out; - p = as_hex(p, va_arg(args, unsigned long), pad); - break; - case 'x': - if (end - p <= max(sizeof(int) * 2, pad)) - goto out; - p = as_hex(p, va_arg(args, unsigned int), pad); - break; - default: - goto out; - } - } -out: - va_end(args); - sclp_early_printk(buf); -} - -void print_stacktrace(unsigned long sp) -{ - struct stack_info boot_stack = { STACK_TYPE_TASK, (unsigned long)_stack_start, - (unsigned long)_stack_end }; - bool first = true; - - decompressor_printk("Call Trace:\n"); - while (!(sp & 0x7) && on_stack(&boot_stack, sp, sizeof(struct stack_frame))) { - struct stack_frame *sf = (struct stack_frame *)sp; - - decompressor_printk(first ? "(sp:%016lx [<%016lx>] %pS)\n" : - " sp:%016lx [<%016lx>] %pS\n", - sp, sf->gprs[8], (void *)sf->gprs[8]); - if (sf->back_chain <= sp) - break; - sp = sf->back_chain; - first = false; - } -} - -void print_pgm_check_info(void) -{ - unsigned long *gpregs = (unsigned long *)S390_lowcore.gpregs_save_area; - struct psw_bits *psw = &psw_bits(S390_lowcore.psw_save_area); - - decompressor_printk("Linux version %s\n", kernel_version); - if (!is_prot_virt_guest() && early_command_line[0]) - decompressor_printk("Kernel command line: %s\n", early_command_line); - decompressor_printk("Kernel fault: interruption code %04x ilc:%x\n", - S390_lowcore.pgm_code, S390_lowcore.pgm_ilc >> 1); - if (kaslr_enabled()) - decompressor_printk("Kernel random base: %lx\n", __kaslr_offset); - decompressor_printk("PSW : %016lx %016lx (%pS)\n", - S390_lowcore.psw_save_area.mask, - S390_lowcore.psw_save_area.addr, - (void *)S390_lowcore.psw_save_area.addr); - decompressor_printk( - " R:%x T:%x IO:%x EX:%x Key:%x M:%x W:%x P:%x AS:%x CC:%x PM:%x RI:%x EA:%x\n", - psw->per, psw->dat, psw->io, psw->ext, psw->key, psw->mcheck, - psw->wait, psw->pstate, psw->as, psw->cc, psw->pm, psw->ri, - psw->eaba); - decompressor_printk("GPRS: %016lx %016lx %016lx %016lx\n", - gpregs[0], gpregs[1], gpregs[2], gpregs[3]); - decompressor_printk(" %016lx %016lx %016lx %016lx\n", - gpregs[4], gpregs[5], gpregs[6], gpregs[7]); - decompressor_printk(" %016lx %016lx %016lx %016lx\n", - gpregs[8], gpregs[9], gpregs[10], gpregs[11]); - decompressor_printk(" %016lx %016lx %016lx %016lx\n", - gpregs[12], gpregs[13], gpregs[14], gpregs[15]); - print_stacktrace(S390_lowcore.gpregs_save_area[15]); - decompressor_printk("Last Breaking-Event-Address:\n"); - decompressor_printk(" [<%016lx>] %pS\n", (unsigned long)S390_lowcore.pgm_last_break, - (void *)S390_lowcore.pgm_last_break); -} |